<template>
    <div id="app">
        <el-button type="primary" size="mini" plain >添加角色</el-button>
        <el-button type="primary" size="mini" plain @click="showTreeDialog">角色授权</el-button>
        <!-- 角色授权对话框 -->
        <el-dialog title="角色授权" :visible.sync="dialogTreeVisible">
            <el-tree
                    :data="functions"
                    show-checkbox
                    default-expand-all
                    node-key="id"
                    ref="tree"
                    highlight-current
                    :props="defaultProps"
                    @check="checkFunction">
            </el-tree>
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="dialogTreeVisible = false">确 定</el-button>
            </div>
        </el-dialog>
        <!--    角色表格-->
        <el-table
                ref="roleTable"
                :data="roles"
                style="width: 100%"
                highlight-current-row
                @current-change="selectRole">
            <el-table-column
                    type="selection"
                    width="55">
            </el-table-column>
            <el-table-column
                    label="编号">
                <template slot-scope="scope">
                    <span style="margin-left: 10px">{{ scope.row.id }}</span>
                </template>
            </el-table-column>
            <el-table-column
                    label="名称">
                <template slot-scope="scope">
                    <span style="margin-left: 10px">{{ scope.row.name }}</span>
                </template>
            </el-table-column>
            <el-table-column
                    label="描述">
                <template slot-scope="scope">
                    <span style="margin-left: 10px">{{ scope.row.description }}</span>
                </template>
            </el-table-column>
            <el-table-column label="操作">
                <template slot-scope="scope">
                    <el-button
                            size="mini"
                            @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
                    <el-button
                            size="mini"
                            type="danger"
                            @click="handleDelete(scope.$index, scope.row)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
        <el-pagination
                background
                layout="prev, pager, next"
                :total="total"
                :page-size="pageSize"
                :current-page="current"
                @current-change="loadRoles">
        </el-pagination>
    </div>
</template>

<script>
    export default {
        name: "Role",
        data(){
            return {
                roles:[], // 角色列表
                total:0,
                current:0,
                pageSize:10,
                currentRole:null,  //当前选择的角色
                functions:[], //权限列表
                dialogTreeVisible:false,//是否显示树对话框
                defaultProps: { //配置子节点和节点的显示属性
                    children: 'subFunctions',
                    label: 'name'
                }
            }
        } ,
        methods:{
            //分页查询角色
            loadRoles(current){
                this.axios.get("/roles/page?current=" + current)
                    .then(res =>{
                        this.roles = res.data.data;
                        this.total = res.data.total;
                        this.current = res.data.current;
                    });
            },
            //加载所有的权限
            loadFunctions(){
                this.axios.get("/functions")
                    .then(res => {
                        this.functions = res.data;
                    })
            },
            //显示角色授权的对话框
            showTreeDialog(){
                if(this.currentRole){
                    this.dialogTreeVisible = true;
                    //加载角色对应权限
                    this.axios.get("/functions/role/"+this.currentRole.id)
                        .then(res => {
                            //选中角色的权限
                            this.$refs.tree.setCheckedNodes(res.data);
                        });
                }else{
                    this.$message("你必须选择一个角色!");
                }
            },
            handleEdit(index, row) {
                console.log(index, row);
            },
            handleDelete(index, row) {
                console.log(index, row);
            },
            //选择角色
            selectRole(row){
                this.currentRole = row;
                //全部取消
                this.$refs.roleTable.clearSelection();
                //选中当前行
                this.$refs.roleTable.toggleRowSelection(this.currentRole);
            },
            //勾选权限
            checkFunction(fun,state){
                console.log(fun.name);
                if(state.checkedNodes.includes(fun)){
                    console.log("勾选");
                    this.axios.post("/role-function",{roleId:this.currentRole.id,funId:fun.id})
                        .then(res => {
                            if(res.data === "ok"){
                                this.$message("添加权限成功")
                            }
                        });
                }else{
                    console.log("取消勾选");
                    this.axios.delete("/role-function/"+this.currentRole.id+"/"+fun.id)
                        .then(res => {
                            if(res.data === "ok"){
                                this.$message("删除权限成功");
                            }
                        });
                }
            }
        },
        mounted(){
            this.loadRoles(1);
            this.loadFunctions();
        }
    }
</script>

<style scoped>

</style>